Low-Complexity Performance Evaluation of Binary and Quaternary DS-SSMAover Rician Fading Channels via the Characteristic Function Method

  • Authors:

  • Dandan Liu;Charles L. Despins;Witold A. Krzymien

  • Affiliations:

  • INRS Télécommunications (Université du Québec), 16 Place du Commerce, Verdun, Québec, Canada H3E 1H6;INRS Télécommunications (Université du Québec), 16 Place du Commerce, Verdun, Québec, Canada H3E 1H6;TR Labs/University of Alberta, 800 Park Plaza, 10611-98 Avenue, Edmonton, Alberta, Canada T5K 2P7

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 1998

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Abstract

This paper presents an efficient and accurate performance evaluationtechnique for binary and quaternary direct-sequence spread-spectrummultiple-access (DS-SSMA) systems with deterministic signature sequencesover Rician fading channels, without resorting to any (e.g. Gaussian)assumptions with respect to the distribution of the multiple-accessinterference (MAI). The method is based on a reduced-complexity formulationof the characteristic function method. In previous versions of thistechnique, the characteristic function of the MAI component of the decisionstatistic was expressed in terms of a double integral over the distributionsof phase and delay. The new formulation, developed herein for both binaryand quaternary modulation with a correlation receiver, generates a compactexpression for the characteristic function of the MAI, eliminates the needfor numerical integration over the phase distribution and yields acomputational complexity reduction proportional to the spreading gain. Thisrenders the characteristic function method more attractive for applicationto wideband CDMA systems and by extension, to more complex transceiverstructures.